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NGK 6706 Spark Plug
| Brand | NGK 6706 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | .036 |
| Ground Electrode Quantity | 1 |
| Hex Size | 14 |
| Insulator Height | 50.00 |
| Manufacturer Heat Range | 8 |
| Seat Type | Flat |
| Reach | 26.5 |
| Thread Diameter | 12.00 |
| Part Number | Lkar8ai-9 |
| Stock Number | 6706 |
| Fits | — |
Laser Iridium design. Iridium tip helps deliver precise, consistent ignition performance.
Copper core. Promotes efficient heat transfer for stable spark plug operation.
OE supplier heritage. Backed by NGK's long-standing original equipment manufacturing experience.
Cross-references Atlantic Automotive Engineering 6706 and 75039093000 for the same application. See all 2.
NGK Laser Iridium Spark Plug 6706
NGK 6706 is a Laser Iridium spark plug built for precise ignition performance and OE-style durability. It uses an iridium center electrode tip, a nickel ground electrode, and a 0.036 pre-gap to support consistent spark delivery in modern ignition systems.
As part of the NGK Laser Iridium Spark Plug line, this plug reflects NGK’s OE-focused engineering for domestic and import vehicles. The design is aimed at stable combustion, reliable starting, and long service life in applications that specify the LKAR8AI-9 configuration.
Key Features
- Laser Iridium center electrode tip for focused spark performance
- Copper center electrode core for efficient heat transfer
- Nickel ground electrode with standard configuration
- 0.036 pre-gap for OE-style setup
- 5000 ohm resistance for ignition system compatibility
- 12 mm thread diameter, 14 mm hex size, flat seat
- Manufacturer heat range 8
- Part number 6706, NGK LKAR8AI-9
Detailed Description
NGK 6706 is a spark plug engineered for vehicles that call for the LKAR8AI-9 specification. The iridium tip helps maintain a concentrated spark point, while the copper core and standard nickel ground electrode support dependable heat control and combustion consistency. This makes it a practical choice for drivers searching for an NGK Laser Iridium spark plug 6706 replacement for OE-style ignition service.
For long-tail fitment searches, this part is commonly referenced by buyers looking for a spark plug for Honda Civic, Toyota Corolla, or similar import applications that use the same NGK 6706 specification. Always confirm the engine code and plug specification against the vehicle’s service information before ordering.
This part cross-references Atlantic Automotive Engineering 6706 and 75039093000 for the same application.
What It Helps Address
- Hard starting caused by worn spark plug electrodes
- Rough idle from inconsistent spark delivery
- Misfire conditions related to plug wear or gap drift
- Reduced throttle response from weak ignition performance
- Maintenance replacement for vehicles using the LKAR8AI-9 plug spec
Installation Notes and Tips
Verify the thread diameter, reach, seat type, and pre-gap before installation. NGK 6706 uses a flat seat, 12 mm thread diameter, 26.5 reach, and a 0.036 pre-gap, so it should be matched to the engine specification exactly. Use proper torque procedures and inspect ignition coils, boots, and plug wells during service. If the vehicle calls for a different heat range or terminal style, select the correct plug for that application.
Quality Assurance
NGK is a major OE supplier with decades of automotive ignition experience and broad coverage across domestic and import vehicles. The brand’s manufacturing and distribution network supports consistent product standards for ignition service parts.
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